Radeon R9 290X vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon R9 290X		300 Watts
	Difference: 225 Watts (300%)

Memory Bandwidth

The Radeon R9 290X should theoretically be much faster than the Radeon R9 M280X overall. (explain)

Radeon R9 290X		320000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 232000 (264%)

Texel Rate

The Radeon R9 290X should be a lot (about 179%) better at texture filtering than the Radeon R9 M280X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 90400 (179%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 290X is superior to the Radeon R9 M280X, by far. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 36800 (256%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.